#include <stdio.h> // printf
#include <ctype.h>

int main(int argc, char **argv) {
    for (int i = 1; i < argc; i++) {
        char *arg = argv[i];
        for (int j = 0;; j++) {
            char character = arg[j];
            if (character == 0) {
                break;
            }
            // notice the space following `%c`
            printf("%c", toupper(character));
        }
        printf("\n");
    }

    return 0;
}
